Not a single person will be prosecuted for multiple voting at the 2013 federal election – even those who admitted to casting more than one ballot paper.

Australian Electoral Commissioner Tom Rogers said he was "disturbed" that of the nearly 8000 cases of suspected voting fraud passed to the Australian Federal Police, not a single case has been forwarded to the Director of Public Prosecutions.

Of the 7743 suspected cases of voting fraud referred to the AFP, just 65 were investigated and no one will progress to conviction.Credit:Meredith Clisby

Of the 7743 suspect cases referred to the AFP, just 65 were investigated and not one will progress to conviction.

Mr Rogers told a Senate estimates committee that the file passed to the AFP included voters who had actually admitted to voting at more than one polling station and cases where the offence had been denied but there was supporting evidence that they had.

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Mr Rogers told senators at a hearing on Tuesday night that the legislation enabling the prosecution of voting cheats needed to be overhauled to protect the "perception of integrity" of Australia's voting system.

"I'm the commissioner and I'm disturbed by the numbers I'm telling you this evening," he said.

"I'm uncomfortable with the current situation."

He said the AFP had advised the commission that it would require greater evidence, such as closed circuit surveillance cameras in polling places, to secure prosecutions.

"The main inhibitors are the lack of corroborative evidence available … I've done about as much as I can do with the issue of multiple voting. We've referred more multiple voters to the AFP than, I think, ever before in the history of the AEC," Mr Rogers said.

"There is clearly an issue with the process and it does concern me."

He said it would cost an extra $60 million per federal election to introduce electronic technology that flags when someone has already voted elsewhere, trialled in the 2014 Griffith byelection.

Senator Dean Smith said the integrity of the voting system was of paramount importance and referred to the "raw anger" among his Liberal Party colleagues when a bungle by the commission forced a fresh Senate vote in Western Australia following the 2013 federal election.

The stuff-up ended the career of Mr Rogers' predecessor, Ed Killesteyn. The WA vote resulted in the return of Greens' senator Scott Ludlam and a third Palmer United Party senator, Zhenya 'Dio' Wang.

Special Minister of State Michael Ronaldson said the Electoral Commission had briefed him on the problems with prosecuting multiple voters and the matter will form the subject of a submission to the Joint Standing Committee on Electoral Matters.